Heater-type cathode
[電] 旁熱式陰極
?? 詞語組成解析
type
[ta?p]
n. 類型;鉛字;（印刷或打印的）文字;于…類型的;
vt.& vi. 打字;
vt. [醫學]測定（血型）;按類型把…歸類;成為…的典型;[印刷]澆鑄（鉛字等）;
cathode
[['k?θ?ud]]
n. 陰極\\n[化] 陰極
??? 情景例句
I don't know.
我不知道。
Every door may be shut but death's door.
除了死門外，每門都可關。
And why only snakes? Cats, for instance, would be greatly helped; no running fights with large, fierce rats or tussles with grown rabbits -- just a bite and no more effort needed.
為什么只有蛇才有毒液呢？譬如說，如果貓有毒液，那對貓會大有幫助，它就不必再和又大又兇的老鼠邊跑邊博斗了，也不必再和大兔子扭斗了，只要咬一口，就不必再費大力氣。